Dual Rate Coil Springs designed to improve the stance of your Super Duty while taking performance, capability and ride quality to the next level with clearance for 35" tires.

In place of the factory stamped steel arms this kit upgrades to heavy duty BDS radius arms. These brawny arms are built from 1-3/4" OD heavy wall tubing, fully welded with gussets for superior strength to the factory units light weight stamped steel units they are replacing. The heavy wall tubular construction improves strength while correcting caster with a lower cam slot.
At the frame mount a large OE-style rubber bushing is used to better isolate of NHVs and allow for quiet operation without any need for maintenance. These bushings offer superior durability and quieter operation than arms with heims and flex joints. Also upgraded as part of these new 3" lift systems is a high strength replacement track bar designed to recenter the front axle with the lift installed.
This new track bar is adjustable, built from 1-3/8" solid steel stock with gusseted ends and a fine thread center turnbuckle with pinch bolts. The track bar comes pre-assembled and ready to bolt into the factory location to adjust to length. At one end these use a greaseable, high-durometer polyurethane bushing and the other end a heavy duty ball joint.
This setup offer strength, comfort and quiet operation over track bars that use heims. Rounding out the front of these kits are front brake line relocation brackets to allow enough slack in the lines to cycle the suspension offroad while the sway bar relocation brackets to correct sway bar operating angle for optimal performance without sacrificing approach angle.

In the rear, these kits use a 1" bolt-on lift block and new black e-coated u-bolts to level stance while retaining the factory rear springs for ride quality and tow capacity. Finishing out the rear are a pair of NX2 or FOX 2.0 performance series gas shocks to compliment the front performance. Take your new Super Duty to the next level these new 3" radius arm systems from BDS Suspension.

Tire & Wheel Combinations
35" x 12.50 w/17 x 9 and 4.5-5" back spacing
35" x 12.50 w/18 x 9 and 4.5-5" back spacing
35" x 12.50 w/20 x 9 and back spacing
*Trimming may be required*

Est. Installation: 4-5 hours
Difficulty Level (easy 1 - 5 complicated): 3

Kit Components
Qty Part# Description
1x 013108 2017-2022 F250/F350 1in Rear Block Kit
1x 013261 2020-2022 F250/350 2.5in Front Box Kit
1x 033251 2005-2022 Ford Super Duty 2.5" Coil Spri
1x 123263 2023 Ford F250/350 4wd Radius Arm Kit, P
2x 98224710 Fox 2.0 Shock 23.27 x 14.65 x 2- S50/EB1
2x 98224717 Fox 2.0 Shock 30.05 x 18.45 x 2- EB1/EB1
1x 55380 2017-2020 Ford Super Duty - Dual Steerin
2x 98224010 Fox 2.0 Steer Stab 23.7 x 15.1 EB1/EB1
4x 4031 U-Bolt

Important Kit Notes
1. Designed for use on diesel models, but can be installed on gas trucks.
2. Will achieve additional 3/4" front ride height.
3. Installation requires a torque wrench capable of 406 ft-lbs.
4. Due to taller factory ride height, Tremor models will not net full advertised lift height. Final ride height will be the same as standard models.
5. Larger tires on stock wheel are not recommended due to interference with brake line, radius arm and sway bar. Use recommended specs listed in wheel and tire fitment section.
6. Trucks without top mounted overload spring will require (x4) UBT4031 available to purchase seperately.